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authorMark Brown <broonie@opensource.wolfsonmicro.com>2012-08-07 19:42:45 +0100
committerSamuel Ortiz <sameo@linux.intel.com>2012-09-11 10:15:02 +0200
commit72dcb1197228b50bfb709ba97c2d53013c605868 (patch)
treea3200a280effa253353dcc4a5a7b4b5a0bd6e2c6 /include/linux/ioport.h
parentc10c2aab634a3c61c46b98875988b2f53040bc9c (diff)
resources: Add register address resource type
Currently a bunch of I2C/SPI MFD drivers are using IORESOURCE_IO for register address ranges. Since this causes some confusion due to the primary use of this resource type for PCI/ISA I/O ports create a new resource type IORESOURCE_REG. Unfortunately the current resource types are specified as bitmasks and there are no free bitmasks even though they really shouldn't be used as such so we define the new type as IORESOURCE_IO | IORESOURCE_MEM. Benjamin Herrenschmidt and Russell King have both verified that none of the users in this series will have a problem with this, and no new code should be affected. This patch was written by Russell King but he found himself unable to take the patch further. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com> Tested-by: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'include/linux/ioport.h')
-rw-r--r--include/linux/ioport.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index 589e0e75efae..bfee885791c2 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h
@@ -31,6 +31,7 @@ struct resource {
#define IORESOURCE_TYPE_BITS 0x00001f00 /* Resource type */
#define IORESOURCE_IO 0x00000100
#define IORESOURCE_MEM 0x00000200
+#define IORESOURCE_REG 0x00000300 /* Register offsets */
#define IORESOURCE_IRQ 0x00000400
#define IORESOURCE_DMA 0x00000800
#define IORESOURCE_BUS 0x00001000